C522 It Was Willing to Become an Eternal Ally!

Ye Yang shouted out loudly. He picked up the diamond carving brush and started drawing on the huge crystal.

A mysterious pattern appeared on the crystal.

Along with a creaking sound, a detailed and complicated formation slowly appeared.

Loong Fangtu was a rank 7 formation master.

Even so, even if he pressed his eyes on the crystal, he still could not tell what kind of formation it was